Effect of Trace B on the Microstructure and Mechanical Properties of a Newly Near α High Temperature Titanium Alloy

2017 ◽  
Vol 19 (12) ◽  
pp. 1700490 ◽  
Author(s):  
Chongxiao Guo ◽  
Changjiang Zhang ◽  
Jianchao Han ◽  
Shuzhi Zhang ◽  
Fei Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
High Temperature ◽  
Microstructure And Mechanical Properties

Effect of Hot Processing on Mircrostructure and Properties of Flat Billets of TA15 Titanium Alloy

2021 ◽  
Vol 1016 ◽  
pp. 906-910
Author(s):  
Xin Hua Min ◽  
Cheng Jin
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Titanium Alloy ◽  
High Temperature ◽  
Room Temperature ◽  
High Strength ◽  
Slow Cooling ◽  
Microstructure And Mechanical Properties ◽  
Ta15 Titanium Alloy ◽  
The Ideal

In this paper,effect of the different forging processes on the microstructure and mechanical properties of the flat flat billets of TA15 titanium alloy was investigated.The flat billiets of 80 mm×150 mm×L sizes of TA15 titanium alloy are produced by four different forging processes.Then the different microstrure and properties of the flat billiets were obtained by heat treatment of 800 °C~850 °C×1 h~4h.The results show that, adopting the first forging temperature at T1 °C、slow cooling and the second forging temperature at T2°C 、quick cooling, the primary αphases content is just 10%, and there are lots of thin aciculate phases on the base. This microstructure has both high strength at room temperature and high temperature, while the properties between the cross and lengthwise directions are just the same. So the hot processing of the first forging temperature at T1 °C、slow cooling and the second forging temperature at T2°C 、quick cooling is choosed as the ideal processing for production of aircraft frame parts.

Effect of Forging Processes on the Microstructure and Mechanical Properties of High Temperature Titanium Alloy Containing Erbium

2017 ◽  
Vol 898 ◽  
pp. 592-597
Author(s):  
Zhen Qiang Wang ◽  
Bo Long Li ◽  
Tong Bo Wang ◽  
Zuo Ren Nie
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloy ◽  
High Temperature ◽  
Cleavage Plane ◽  
Lamellar Microstructure ◽  
Tensile Fracture ◽  
Equiaxed Microstructure ◽  
Forging Process ◽  
Microstructure And Mechanical Properties ◽  
Fracture Morphologies

A new high-temperature titanium alloy containing erbium was designed and fabricated. The influence of α+β forging process and β forging process on microstructure and mechanical properties of the alloy was studied. The microstructure, mechanical properties and fracture morphologies of the new high-temperature titanium alloy after different forging processes were characterized. The results showed that the forging process significantly affected the microstructure of the alloy. The alloy exhibits nearly equiaxed microstructure and lamellar microstructure after α+β and β forging, respectively. In addition, there were Er-rich phases in both forged alloys. The alloy with nearly equiaxed microstructure acquired a satisfactory comprehensive performance. However, the alloy with lamellar microstructure had higher strength and less plasticity. The tensile fracture of the alloy after α + β forging had more dimples, while cleavage plane was obvious in the alloy after β forging. Owing to the addition of erbium and the formation of Er-rich phases, forged alloys possess excellent strength. The Er-rich phase might be the main reason for the fracture.

Effect of Near-Isothermal Forging Temperature on the Microstructure and Mechanical Properties of Near α High Temperature Titanium Alloy

2017 ◽  
Vol 898 ◽  
pp. 579-585 ◽  
Author(s):  
Tao Li ◽  
Li Hua Chai ◽  
Shao Hui Shi ◽  
Zhi Lei Xiang ◽  
Yong Shuang Cui ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Titanium Alloy ◽  
High Temperature ◽  
Strain Rate ◽  
Grain Growth ◽  
Isothermal Forging ◽  
Microstructure And Mechanical Properties ◽  
Strength And Plasticity

The effect of near-isothermal forging temperature on the microstructure and mechanical properties of Ti-Al-Sn-Zr-Mo-Nb-W-Si-Er near α high temperature titanium alloy was investigated by near-isothermal forging at the strain rate of 0.01s-1 and 80% deformation. The results indicated that near-isothermal forging temperature of 1050°C is relatively low. After forging at 1050°C the grain growth is not obvious and original β grain as well as intragranular lamellar are fine. By comparison, the alloy forged at 1120°C possessed typical basket weave microstructure. With the increase of near-isothermal forging temperature, the tensile strength and plasticity of the alloy decrease. Excellent comprehensive mechanical properties could be achieved in the alloy after forging at temperature 1050°C.

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